Fedora developer Kevin Fenzi wrote a blog post this weekend looking back at the progress of Rawhide for 2015 and some of their hopes for improving it further in 2016. In 2015 they reached a state where OpenQA is running on Rawhide images daily to ensure the state is sane enough for the installer to work, Rawhide packages are mostly all signed now, and more people have adopted using Fedora Rawhide on a day-to-day basis.
Looking to this year, he hopes they will change the compose process to using Pungi4 so that way their build process of daily Rawhide images match how they assemble the official release media. Additionally, they are working through some other bugs and hope to begin running more automated tests on the compose images as well.
Overall, it's great to see Rawhide continuing to become more usable and reliable. Additional details via Kevin's blog post.